Wrench.



D. K. HILL.

WRENCH.

,APPLIOATION FILED IEB.18, 1910.

Patnted Nov. 15, 1910.

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DAVID K. HILL, 0F LEEGHBURG, PENNSYLVANIA.

WRENCH.

To all whom it may concern:

Be it known that 1, DAVID K. HILL, a citizen of the United States ofAmerica, residing at Leechburg, in the county of Arnistrong and State ofPennsylvania, have invented certain new and useful Improvements inWrenches, of which the following is a specification, reference being hadtherein to the accompanying drawing.

This invention relates to wrenches, and the objects of my invention areto provide a nut and pipe wrench that can be safely used for rotatingnuts and objects having curved surfaces, and to furnish a wrench withpositive and reliable means whereby the movable jaw thereof can bequickly adjusted.

Other objects of my invention are to dispense with the use of screws andnuts for adjusting the movable jaw of the wrench, and to furnish awrench with effective means for locking the movable jaw in a fixedposition.

Further objects of my invention are to provide a quick acting wrenchconsisting of comparatively few parts easily and quickly assembled, andto provide a wrench that is simple in construction, durable, easy tomanipulate, and highly efficient for the purposes for which it isintended.

These and such other objects as may hereinafter appear are attained bythe mechanical construction shown in the drawing forming a part of thisspecification, wherein:-

Figure 1 is a side elevation of my improved wrench, Fig. 2 is a similarview showing the movable jaw thereof in section and in a releasedposition, Fig. 3 is a sectional view of the wrench taken on the line XXof Fig. 1, looking in the direction of the arrow, Fig. 4 is a similarview taken on the line WeVV, and Fig. 5 is a sectional elevation of aportion of the wrench, illustrating a modified form of jaws.

In the accompanying drawing the reference numeral 1 denotes a shankrectangular in cross section and having one end thereof provided with afixed jaw 2 having a gripping surface 3, while the other end of theshank 1 is provided with a right angular extension 4, the object ofwhich will presently appear.

5 denotes a jaw slidably mounted upon the front side of the shank 1,said jaw having a gripping surface 6 adapted to confront the grippingsurface 3 and cooperate therewith Specification of Letters Patent.

Application filed February 18, 1910.

Patented Nov. 15, 1910.

Serial No. 544,660.

in gripping the faces of a nut. The jaw 5 is also provided with a bar 7having the outer face thereof provided with teeth 8. The jaw 5 is heldin engagement. with the shank 1 by straps 9, carried by the ends of thejaw, said straps embracing the shank 1 and allowing the jaw 5 to beeasily moved thereon.

10 denotes side plates riveted or otherwise secured, as at 11 to thesides of the shank 1, these plates projecting at right angles from theshank at the side of the bar 7. Pivotally mounted between the outer endsof the plates 10 by a pin 12 is a locking member 13 having the rear facethereof pro vided with an enlargement 1 1 having teeth 15 adapted toengage the teeth 8 of the bar 7. The free end of the member 13 iscurved, as at 16 and has its extremity provided with a tooth 17.

18 denotes a yoke carried by one end of the shank 1 and pivotallyconnected to said yoke is a clasp 19, said clasp having an open.- ing 20formed therein adapted to receive the tooth 17 of the locking member 13.

21 denotes a spring having one end thereof secured to the lower end ofthe shank 1, as at 22, while the opposite end thereof extends into theyoke 18 against the clasp 19. The spring 21 is adapted to retain theclasp 19 in an open or closed position, and the length of the yoke 18 issufficient for the clasp to be swung either into an active or inactiveposition.

23 denotes a compound curved spring having one end thereof fixed, as at24 to the extension 41 of the shank 1, while the other end of saidspring is slotted, as at 25 and loosely connected to the rear face ofthe locking member 13 by a pin or screw 26. The object of this spring isto shift the looking member 13 when released by the clasp 19, the springpreventing the free end of the locking member from assuming a positionwhere it could not be easily gripped by a hand embracing the lower endof the shank 1.

In Fig. 5 of the drawing I have illustrated a slight modification of theinvention, wherein the fixed jaw 2 is curved and the recess 27 thereofprovided with transverse gripping teeth 28. The gripping face of the jaw5 is provided with a recess 29 and mounted in said recess by a pin 30 isa detachable gripping jaw 31 having teeth 32 adapted to cooperate withthe teeth 28 in gripping a curved or rounded surface, for instance, thesurface of a pipe.

The wrench 111 its entirety is made of strong and durable metal, andwhile in the drawing there is illustrated a preferred embodiment of theinvention, it is to be understood that the structural elements thereofcan be varied or changed without departing from the scope of theappended claims.

Having now described my invention what I claim as new, is

l. A wrench comprising a shank, a fixed jaw carried by one end and aright-angularly disposed extension provided at the other end thereof, amovable jaw slidably-mounted upon the shank, a bar carried by themovable jaw and extending in parallelism with respect to the shank andhaving its outer face provided with teeth, plates secured to oppositesides and intermediate the ends of said shank and projecting beyond thetoothed face of said bar, a locking member having one endpivotally-mounted between said plates and further having a portion ofits inner face in proximity to its pivoted end provided with a toothedenlargement adapted to engage the teeth of said bar to prevent movementof the latter, a pivoted clasp carried by the said shank and adapted toengage the free end of the locking member for maintaining it frommovement, a curved spring having one end secured to said extension, anda pin and slot connection be tween the other end of said curved springand the inner face of said locking member.

2. A wrench comprising a shank, a fixed jaw carried by one end and aright-angularly disposed extension provided at the other end thereof, amovable jaw slidably-mounted upon the shank, a bar carried by themovable jaw and extending in parallelism with respect to the shank andhaving its outer face provided with teeth, plates secured to oppositesides and intermediate the ends of said shank and projecting beyond thetoothed face of said bar, a locking member having one endpivotally-mounted between said plates and further having a portion ofits inner face in proximity to its pivoted end provided with a toothedenlargement adapted to engage the teeth of said bar to prevent movementof the latter, a pivoted clasp carried by the said shank and adapted toengage the free end of the locking member for maintaining it frommovement, a curved spring having one end secured to said extension, apin and slot connection between the other end of said curved spring andthe inner face of said locking member, and resilient means carried bythat end of the shank provided with the extension and adapted to engagesaid clasp for maintaining it in an inoperative position.

In testimony whereof I aflix my signature in the presence of twowitnesses.

DAVID K. HILL.

Vitnesses CLARENCE O. MORRIS, C. J. NIEMAN.

